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"""Proceess '\n'."""
from ..common.utils import charStrAt, isStrSpace
from .state_inline import StateInline
def newline(state: StateInline, silent: bool) -> bool:
pos = state.pos
if state.src[pos] != "\n":
return False
pmax = len(state.pending) - 1
maximum = state.posMax
# ' \n' -> hardbreak
# Lookup in pending chars is bad practice! Don't copy to other rules!
# Pending string is stored in concat mode, indexed lookups will cause
# conversion to flat mode.
if not silent:
if pmax >= 0 and charStrAt(state.pending, pmax) == " ":
if pmax >= 1 and charStrAt(state.pending, pmax - 1) == " ":
# Find whitespaces tail of pending chars.
ws = pmax - 1
while ws >= 1 and charStrAt(state.pending, ws - 1) == " ":
ws -= 1
state.pending = state.pending[:ws]
state.push("hardbreak", "br", 0)
else:
state.pending = state.pending[:-1]
state.push("softbreak", "br", 0)
else:
state.push("softbreak", "br", 0)
pos += 1
# skip heading spaces for next line
while pos < maximum and isStrSpace(state.src[pos]):
pos += 1
state.pos = pos
return True
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